<xr-scene ar-system="modes:Plane" bind:ready="handleReady">   <xr-env env-data="xr-frame-team-workspace-day" />   <xr-light type="ambient" color="1 1 1" intensity="1" />   <xr-light type="directional" rotation="40 70 0" color="1 1 1" intensity="3" cast-shadow />   <xr-assets bind:loaded="handleAssetsLoaded">     <xr-asset-load type="gltf" asset-id="anchor" src="https://mmbizwxaminiprogram-1258344707.cos.ap-guangzhou.myqcloud.com/xr-frame/demo/ar-plane-marker.glb" />     <xr-asset-load type="gltf" asset-id="Plate" src="{{modelData.path}}" />   </xr-assets>   <xr-ar-tracker mode="Plane">     <xr-gltf model="anchor"></xr-gltf>   </xr-ar-tracker>   <xr-node node-id="setitem">     <xr-gltf model="Plate" node-id='Plate' anim-autoplay  position="0 0 0" scale="{{modelData.scale}}" rotation="{{modelData.rotation}}" />   </xr-node>   <xr-camera clear-color="0.4 0.8 0.6 1" background="ar"      is-ar-camera   /> </xr-scene> data: {     loaded: false,     modelData: {       path: 'https://houtaicdn.alva.com.cn/medias/resources/wechat/baikeWebview/gltfModels/Dinosaur/Plate/Plate.gltf',       // path: "https://houtaicdn.alva.com.cn/medias/resources/wechat/baikeWebview/gltfModels/HT/42_haiwangxing/42_haiwangxing.gltf"       scale: '0.5 0.5 0.5',       rotation: '0 0 0'     }   }, methods: {     handleAssetsLoaded: function({detail}) {       this.scene.event.add('touchstart', () => {         this.scene.ar.placeHere('setitem', true);       });     },     handleReady: function ({detail}) {       this.scene = detail.value;     },     handleShare: function() {       const supported = this.scene.share.supported;       if (supported) {         const options = {           type: 'jpg',           quality: 0.8         };         const base64 = this.scene.share.captureToDataURL(options);         const buffer = this.scene.share.captureToArrayBuffer(options);         this.triggerEvent('showPhoto',base64)       }            }   } 华为nova8E  8.0.32微信版本报错（其他手机型号均正常）： [xr-frame] <Error: AR system start error(Plane,1,Back): 2000004> Error: AR system start error(Plane,1,Back): 2000004     at https://lib/WAXRFrameRenderContext.js:1:1198904     at https://lib/WAXRFrameRenderContext.js:1:1199489

https://developers.weixin.qq.com/s/t9sTdGmu7xDI

网页中使用navigator.mediaDevices.getUserMedia接口调用摄像头，在安卓端可以正常使用，safari浏览器也可以使用，但是使用小程序webview加载网页之后没法调用摄像头。我需要在摄像机画面前面展示3D模型， 而input type=file是调用手机自身相机，会覆盖掉小程序内容。

let listener = null,audioContext = null; const audioList = [   '/Wsp/File/Download/21189778427876858',   '/Wsp/File/Download/21122842704905247',   '/Wsp/File/Download/21141684725357527',   '/Wsp/File/Download/21140548707059953',   '/Wsp/File/Download/21141730896281559',   '/Wsp/File/Download/21140021231082737' ]; var audioIndex = 0; const maxIndex = audioList.length - 1;  // 识别相关   createListener(){     let num = 0,self = this;     const context = wx.createCameraContext();     listener = context.onCameraFrame(async function (res) {         num++;         if (num === 50) {           num = 0;           if (audioIndex === maxIndex) {             audioIndex = 0;           } else {             audioIndex++;           }           audioContext.src = 'https://wall.alva.com.cn' + audioList[audioIndex];           audioContext.play();         }      });     listener.start();   },   // 音频相关   initAudio(){       let self = this;       audioContext = wx.createInnerAudioContext();       // audioContext.loop = true;        audioContext.onPlay(() => {         self.setData({           audioPlay: true         })       });       audioContext.onEnded(() => {         console.log('audio onEnded')         self.setData({           audioPlay: false         })       });       audioContext.onPause(() => {         self.setData({           audioPlay: false         });       });   }, 期望表现：更换InnerAudioContext的src后，调用play()只播放新地址的音频； 实际结果：有时更换src前的音频和更换src后的音频同时在播放（在好的手机上偶现，非必现，差的手机上(华为P20)复现频率很高）

wxml:  <input type="text" placeholder="请输入您的答案"              placeholder-style="animation: input-ani  0.6s forwards;" value="{{value}}"/> css: @keyframes input-ani {     0% {         color:#FDF2CE;     }     99%{         color:#FDF2CE;      }     100% {         color: #242424     } }